
/**
 * Fucking crazyyyyyyyyyyyy 
 * The int does not clarify when it got bigger than MAX_INT :(
 * @author TrinhNX
 *
 */
public class Euler008 {
	final static String SAMPLE = "73167176531330624919225119674426574742355349194934"
			+ "96983520312774506326239578318016984801869478851843"
			+ "85861560789112949495459501737958331952853208805511"
			+ "12540698747158523863050715693290963295227443043557"
			+ "66896648950445244523161731856403098711121722383113"
			+ "62229893423380308135336276614282806444486645238749"
			+ "30358907296290491560440772390713810515859307960866"
			+ "70172427121883998797908792274921901699720888093776"
			+ "65727333001053367881220235421809751254540594752243"
			+ "52584907711670556013604839586446706324415722155397"
			+ "53697817977846174064955149290862569321978468622482"
			+ "83972241375657056057490261407972968652414535100474"
			+ "82166370484403199890008895243450658541227588666881"
			+ "16427171479924442928230863465674813919123162824586"
			+ "17866458359124566529476545682848912883142607690042"
			+ "24219022671055626321111109370544217506941658960408"
			+ "07198403850962455444362981230987879927244284909188"
			+ "84580156166097919133875499200524063689912560717606"
			+ "05886116467109405077541002256983155200055935729725"
			+ "71636269561882670428252483600823257530420752963450";

	public static void main(String[] args) {

		final int RANGE = 13;
		long products = 0;
		int i;
		long start = System.nanoTime();
		for (i = 0; i < SAMPLE.length() - RANGE + 1;) {
			long temp = adjacent13(i, RANGE);
			System.out.println(products + " " + temp);
			if (temp == 0) {
				i = i + 13; // skip
			} else {
				products = (products > temp) ? products : temp;
				i = i + 1;
			}
		}
		long end = System.nanoTime();
		System.out.println("MAX: " + products + "\tTime: " + (end - start));
	}

	/**
	 * Start position and 12 next
	 * @param start
	 * @param range
	 * @return product
	 */
	private static long adjacent13(final int start, final int range) {
		long product = 1;
		for (int i = start; i < start + range; i++) {
			int value = SAMPLE.charAt(i) - '0';
			System.out.println("INDEX:" + i + "\tValue" + value);
			if (value == 0) {
				product = 0;
				break;
			} else {
				product = product * value;
			}
		}
		return product;
	}
}